Fitness & Nutrition News

Stay up to date with the latest research, tips, and trends in fitness, nutrition, and weight management.

fitness 15 hours ago

US study shows updated COVID vaccines cut hospitalization odds by 55%

The 2025-2026 COVID-19 vaccines were associated with 50% estimated effectiveness against COVID-19-associated emergency department and urgent care encounters among immunocompetent US adults. They were also linked to an estimated 55% effectiveness against COVID-19-associated hospitalization, providing added protection beyond existing immunity from prior infection or vaccination.

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fitness 16 hours ago

Genetic testing could sharply increase demand for ALS specialist care

The availability of genetic testing for amyotrophic lateral sclerosis (ALS) for people with a family member diagnosed with the disease is expected to greatly increase the number of clinic visits to specialized ALS centers over the next decade, according to a study published June 24, 2026, in Neurology Genetics, an official journal of the American Academy of Neurology.

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fitness 16 hours ago

Metabolic reprogramming in Oocystis borgei drives the biosynthesis of gold nanoparticles

Microalgae-mediated biosynthesis of gold nanoparticles (AuNPs) offers a sustainable alternative for nanomaterial synthesis; however the metabolic mechanisms underlying the reduction of HAuCl4 and the formation of AuNPs remain unclear. In this study, the green microalga Oocystis borgei was employed to synthesize AuNPs, and associated cellular metabolic alterations were systematically examined using transmission electron microscopy (TEM) and untargeted LC-MS-based metabolomics. TEM revealed AuNP accumulation in the chloroplasts, accompanied by substructural disorganization. Metabolomic profiling identified 1,871 upregulated and 1,681 downregulated ions in positive ion mode, and 1,092 upregulated and 1,032 downregulated ions in negative ion mode. Among the significantly upregulated metabolites, fatty acyls, glycerophospholipids, and oxidanesulfonic acid were associated with lipid peroxidation and membrane remodeling. In contrast, downregulated metabolites, including carbohydrates, nucleic acids, and chlorophyll derivatives, indicated suppressed growth and metabolic activity. The differentially abundant metabolites(DAMs) were enriched in purine metabolism, porphyrin and chlorophyll biosynthesis, and plant hormone signaling pathway. Notably, porphyrin and chlorophyll degradation and amino acid/protein metabolism suppression correlated with growth inhibition, whereas oxidised lipids (19-hydroxy-nonadecanoic acid) and stress-responsive metabolites (brassinosteroids and carotenoids) facilitated AuNP synthesis. These findings elucidate the metabolic trade-offs in O. borgei during HAuCl4 detoxification and AuNP biogenesis, enhancing our mechanistic understanding of algal-based nanomaterial synthesis.

fitness 16 hours ago

Scientists map blood chemistry links to hundreds of diseases

A UK Biobank study of nearly 390,000 people mapped 251 NMR-derived plasma metabolic traits against hundreds of health traits, prevalent diseases, and future disease outcomes. The atlas revealed tens of thousands of replicated associations, showed stronger prediction for selected short-term and cardiometabolic outcomes, and identified putative causal links that may guide future precision medicine research.

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